Original description as Pseudotropheus purpuratus:
- Johnson, Donald. 1976. "Two new cichlids of the Mbuna group from Malawi with a discussion of several bicuspid toothed Labidochromis sp.". Today's Aquarist. 2 (3); pp. 17-24 (crc00179)
Conservation: Pseudotropheus purpuratus is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2018).